Agentic repository work
Explore code, make coordinated edits, run tools, and iterate on multi-step software-engineering tasks inside Cognition's agent environments.
Independent tool overview
SWE-1.7 (successor to SWE-1.6) at a glance
SWE-1.6 is Cognition's previous-generation coding-agent model and remains available in Devin Desktop, but SWE-1.7 is now the current successor for longer-horizon software-engineering work across Devin Web, Desktop, and CLI.
Visit the official SWE-1.7 (successor to SWE-1.6) site ↗
- Current successor
- SWE-1.7
- SWE-1.7 launch
- July 8, 2026
- Availability
- Devin Web, Desktop, and CLI
- Fast variant
- SWE-1.7 Lightning
- Published Lightning speed
- 1,000 tokens/second
- Individual plans
- $0, $20, or $200/month
Overview
What SWE-1.7 (successor to SWE-1.6) is
Cognition released SWE-1.6 in April 2026 as a software-engineering agent model optimized for both coding ability and a smoother interactive experience. It focused on reducing overthinking, repetitive loops, unnecessary terminal use, and sequential tool calls while offering standard and faster inference options.
SWE-1.6 has not disappeared: Cognition's current Devin Desktop model guide still lists SWE-1.6 and the paid-user SWE-1.6 Fast variant. However, the same guide labels it the previous generation. SWE-1.7, released July 8, 2026, is the current in-house model and is available in Devin Web, Devin Desktop, and Devin CLI.
SWE-1.7 adds Medium and Max reasoning-effort variants plus SWE-1.7 Lightning on Cerebras. Cognition says it is trained for longer-horizon asynchronous work and reports large benchmark gains over SWE-1.6, but those vendor-run scores should inform a repository-specific evaluation rather than substitute for one.
Use cases
Who SWE-1.7 (successor to SWE-1.6) is best for
The strongest fit depends on the job you need the product to complete, not the size of its feature list.
Latency-sensitive coding
Use the Lightning variant when interactive responsiveness matters and the task fits the model's capabilities.
Teams already using Devin
Keep coding-model selection, local and cloud agents, repository context, quotas, and collaboration inside the existing Devin platform.
Capabilities
Core SWE-1.7 (successor to SWE-1.6) features
Current SWE-1.7 successor
Cognition positions SWE-1.7 as its latest software-engineering model, with Medium and Max reasoning-effort variants for balancing speed and task depth.
Lightning inference
SWE-1.7 Lightning runs on Cerebras and is presented as the same model intelligence with lower latency. Cognition's launch article reports throughput of 1,000 tokens per second.
Long-horizon optimization
The successor was trained for longer asynchronous tasks and learned self-compaction: summarizing its working state and continuing beyond a raw context window.
Multi-surface access
SWE-1.7 is available through Devin Web, the Devin Desktop IDE, and Devin CLI rather than as a standalone consumer chat product.
SWE-1.6 remains selectable
The current model guide still includes standard SWE-1.6 and SWE-1.6 Fast, which can matter for comparing behavior or preserving an existing workflow while testing the successor.
Supporting SWE models
Cognition also uses SWE-1-mini for Tab suggestions, swe-grep for code-context retrieval, and swe-check for lightweight review tasks within the broader developer experience.
Process
How the SWE-1.7 (successor to SWE-1.6) workflow works
Step 1
Use the current Devin surface
Open Devin Web, Devin Desktop, or Devin CLI rather than treating SWE-1.6 or SWE-1.7 as a separately purchased application.
Step 2
Prepare repository instructions
Supply architecture notes, project rules, relevant tests, and a precise definition of done. Exclude secrets and give tools only the permissions needed for the task.
Step 3
Choose model and effort
Start with Cognition's recommended Adaptive router or SWE-1.7 Medium. Move to Max for difficult reasoning or Lightning when latency is the main constraint.
Step 4
Run an internal comparison
If SWE-1.6 behavior is already known, give both generations the same representative tasks and compare correctness, diff quality, tool usage, completion time, and quota cost.
Step 5
Review every action
Inspect terminal commands, dependency changes, network access, generated migrations, and security-sensitive edits. Do not accept a benchmark or confident explanation as proof that the code is correct.
Step 6
Verify in the real environment
Run focused tests, type checks, linting, builds, and realistic acceptance checks, then review the final diff before merging or deploying.
Cost
SWE-1.7 (successor to SWE-1.6) pricing and free plan
SWE-1.6 and SWE-1.7 are accessed through Cognition's Devin products rather than sold as standalone model subscriptions. Current self-serve usage is quota-based and extra paid usage varies with the selected model's token cost. Prices below reflect Devin's individual and team plans checked on August 28, 2026.
Free
$0
For lightweight agent use and the core Devin Desktop experience.
- Light agent quota
- Limited model availability
- Unlimited inline edits
- Unlimited Tab completions
- Verify SWE model access in the current selector
Pro
$20/month
The main individual plan for the broader model catalog and Devin Cloud.
- Access to frontier and open models
- Current plan documentation lists free use of SWE-1.7 and leading open models
- Devin Cloud access
- Daily and weekly quotas
- Extra usage at model API pricing
Max
$200/month
For individual developers needing substantially higher quotas.
- Everything in Pro
- Significantly higher agent quotas
- Unlimited inline edits
- Unlimited Tab completions
Teams
$80/month + $40/full seat
For organizations managing shared billing, usage, and collaboration.
- Unlimited team members with flex seats
- Per-developer full-seat quotas
- Centralized billing
- Admin analytics
- Priority support and sharing
Enterprise
Contact sales
For custom governance, deployment, and usage arrangements.
- SAML or OIDC SSO
- Centralized controls
- Dedicated deployment option
- Account management
- Contract-specific ACU allocation
Pricing checked . Check current pricing at the source ↗
Assessment
SWE-1.7 (successor to SWE-1.6) strengths and limitations
Where it stands out
- SWE-1.7 is optimized specifically for agentic software-engineering work rather than general chat.
- It is available across Devin's web, desktop, and command-line surfaces.
- Medium, Max, and Lightning options let users trade off reasoning depth and latency.
- Cognition still exposes SWE-1.6, enabling controlled comparisons during migration.
- The surrounding Devin environment provides repository context, tools, agents, and verification workflows rather than a bare model endpoint.
- Pro documentation treats the current SWE model as a lower-cost option relative to metered frontier models.
What to consider
- SWE-1.6 is now the previous generation, so new evaluations should include SWE-1.7 rather than standardizing on the older model by default.
- Neither model is presented as a simple standalone public API purchase; access and billing are tied to Devin products and quotas.
- The model guide tells users to check the in-product selector for the latest availability and pricing, which can change faster than static documentation.
- Cognition's benchmark results are vendor-reported and may not predict performance on a particular repository, language, toolchain, or review standard.
- High output speed does not make commands, patches, migrations, or security decisions correct.
- Agent usage can consume quota or extra billed usage, especially on long tasks or more expensive models.
Compare
SWE-1.7 (successor to SWE-1.6) alternatives
The right alternative depends on the specific output, workflow, controls and budget your project requires.
Coding
Cursor
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Claude Code
Choose Claude Code when Anthropic's terminal-first agent and models fit an existing editor and command-line workflow better.
Explore Claude Code →Coding
Codex
Choose OpenAI Codex when you want OpenAI's coding agents across app, CLI, IDE, cloud, and code-review workflows.
Explore Codex →Coding
Replit Agent
Choose Replit Agent when browser-based building, managed infrastructure, collaboration, and deployment are more important than a local repository workflow.
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SWE-1.7 (successor to SWE-1.6) FAQs
What is SWE-1.6?
SWE-1.6 is Cognition's April 2026 model for software-engineering agents, trained for coding ability and smoother tool use. It remains available in Devin Desktop but is now labeled the previous generation.
What replaced SWE-1.6?
SWE-1.7 is the current successor. Cognition launched it on July 8, 2026 and makes it available in Devin Web, Devin Desktop, and Devin CLI.
Is SWE-1.6 still available?
Yes. Cognition's current Devin Desktop model guide lists SWE-1.6 and SWE-1.6 Fast alongside the newer SWE-1.7 family. SWE-1.6 Fast is described as available to paying users.
How fast is SWE-1.7?
Cognition reports that SWE-1.7 Lightning is served through Cerebras at 1,000 tokens per second. Real task time also depends on reasoning, tool calls, repository size, network operations, and verification.
How much does SWE-1.7 cost?
It is bundled into Devin's platform plans rather than sold as a standalone subscription. Devin currently lists Free at $0, Pro at $20 per month, Max at $200, and Teams at $80 per month plus $40 per full developer seat. Quotas and extra model usage apply.
Should I use SWE-1.6 or SWE-1.7?
Start new evaluations with SWE-1.7 because Cognition identifies it as the current model. Keep SWE-1.6 only when an existing workflow depends on its behavior or a controlled comparison shows it performs better on a specific task.
Does SWE-1.7 beat frontier coding models?
Cognition reports competitive results across FrontierCode, Terminal-Bench, and SWE-Bench Multilingual, but the comparison is vendor-run. Evaluate the model on representative repositories and count correctness, review effort, latency, and cost.
Bottom line
Our SWE-1.7 (successor to SWE-1.6) verdict
SWE-1.6 remains usable, but it should no longer be the headline recommendation. SWE-1.7 is Cognition's active successor and the better starting point for new Devin coding-agent evaluations, especially when long-horizon work or Lightning latency matters. Use SWE-1.6 only as a known baseline, and choose a Devin plan only after measuring the current model selector, quota consumption, patch quality, and required human review on real work.
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